Setting For Holding Brakes - YASKAWA SGDH User Manual

8 Operation

8.3.4 Setting for Holding Brakes

8.3.4 Setting for Holding Brakes
The holding brake is used when a SERVOPACK controls a vertical axis. In other words, a servomotor with
brake prevents the movable part from shifting due to gravity when the SERVOPACK power goes OFF. (Refer to
8.1.4 Servomotor with Brakes.)
Vertical Shaft
Servomotor
1. The brake built into the servomotor with brakes is a deenergization brake, which is used only to hold and
IMPORTANT
2. When operating using only a speed loop, turn OFF the servo and set the input reference to 0 V when the
3. When forming a position loop, do not use a mechanical brake while the servomotor is stopped because
(1) Wiring Example
Use the SERVOPACK contact output signal /BK and the brake power supply to form a brake ON/OFF circuit.
The following diagram shows a standard wiring example.
Power supply
R
S
T
+24V
BK-R Y: Brake control relay
Brake power supply Input voltage 200-V models: LPSE-2H01
∗ 1 and ∗ 2 are the output terminals allocated with Pn50F.2.
Shaft with External Force Applied
External
Holding brake
force
Prevents the servomotor
from shifting when
the power is OFF.
Prevents the servomotor from
shifting due to external force.
cannot be used for braking. Use the holding brake only to hold a stopped motor. Brake torque is at least
120% of the rated motor torque.
brake is applied.
the servomotor enters servolock status.
SERVOPACK
L1
L2
L3
L1C
L2C
CN1
BK-RY
(/BK+)
∗1
(/BK-)
∗2
Brake power supply
Blue or
BK-RY
yellow
White AC DC
Input voltage 100-V models: LPDE-1H01
Servomotor
U
V
W
CN2
Surge suppressor
CR50500BL
(manufactured by
Okaya Electric
Red
Industries Co., Ltd.)
Black
8-22
Servomotor
with brake
M
PG
BK